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" H. E. HENWOOD.

THILL GOUPLING. v No; 278,960. PatentedJune 5,1883.

ATTORNEYS.

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* UNITED STATES PATENT OFFIC HORACE E. HENWVOOD, OF NEW YORK, X. Y.

THlLL-COUPLING.

SPECIFICATION forming part of Letters Patent No. 278,960, dated June 5,1883.

Application filed December 15, 1852. (No model.)

To all whom it may concern:

Belit known that I, HORACE E. Hnnwoon, of the city, county, and State ofNew York, have invented a new and useful Improvement in Thill-Couph'ngs,of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all theflgures.

Figure 1 is a side elevation of my improvement, part being removed. Fig.2 is a plan view of the same, partly in section, through the line :1?:12, Fig. 1. Fig. 3-is a plan view of the thill-iron.

The object of this invention is to facilitate the attachment of thillsto vehicles and their removal therefrom, and also to prevent ratfling.

The invention consists in a thillcoupling constructed with an arm formedupon the arm of the axle-clip bow, having recesses and an L-grooveformed in it, and provided with a perforated lug and a separable armhaving recesses and a flanged base, and provided with a perforated lugto receive the screw-bolt that fastens the two arms together, clampingbetween them the ball formed upon the neck of the thill-iron, so thatthe thills will be held securely and without rattling, and can be easilyand quickly attached, as will be hereinafter fully described.

1A is the axle of a vehicle. B is the bow, and C is the yoke of theaxle-clip. Upon the outer arm of the bow B is formed an arm, D, theouter side of the outer part of which is rounded off, as shown in Fig.2. The inner side of the arm D is in line with the center of the arm ofthe bow B, is vertical, and has a semispherical recess, E, formed in it.In the base of the arm D is formed an L-groove, F, to receive theflanged base of the separable arm G, as shown in Fig. 2. The outer sideof the arm G is rounded off, and its inner side is vertical and has asemi-spherical recess, H, formed in it, which, in connection with. therecess E in the arm D, forms a spherical recess to receive the ball 1,formed upon the end of the thill-iron J. The thill-iron J is made with acylindrical neck,'K, and its outer ture of the rear part of the thill L,as shown in Figs. 1 and 3.

Upon the outer ends of the arms D G are formed lugs M N, in one of whichis formed a screw-hole and in the other a smooth hole to .the arms D Gare formed recesses I, which together form a slot, through which theneck K of the thill-iron J passes, and along which the said neck movesas the thills are raised and lowered.

In the adjacent faces of the rear parts of the arms D G, along the rearedges of the re cesses E H, from the'rear end of the slot P to the loweredges of the said arms D G, are formed grooves Q, forming a channelthrough which any dust that may enter the slot P can escape.

The thills are attached by placing the balls I of the thill-irons'J inthe recesses E of the arms D. The flanges of the arms G are then placedin the grooves F, as indicated in dotted lines in Fig. 2,

The thills are detached by taking out the screw-bolts O and removing thearm G. With this construction thills will beheld in place securely andwithout rattling, and can be easily and quickly attached and detachedwhen required.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1.. A thill coupling constructed substantially as herein shown anddescribed, and consisting of the arm D, formed upon the arm of theaxle-clip bow, having recesses E P Q and L-groove F, and provided with aperforated H P Q. and flanged base, and provided with a perforated lug,N, the bolt 0, and the thilliron J, ha-ving ball I and neck K, as setforth.

2. In a thill-coupling, the combination, with the axle-clip B C and therigid arm D, having 7 and the said arms are swung into place and securedby the screw-bolts O.

lug, M, the separable arm G, having recesses 7 IOO recesses E P Q andL-groove F, andprovided be held securely and without rattling, and canwith a perforated lug, M, of the separable arm be easily and qiiicklyattached and detached,

G, having recesses H P Qand flanged base, and; as set forth.

provided with a perforated 111g, N, the fasten- HORACE -E. HENYVOOD.ing-bolt O, and the thill-iron J, having tel-mi- 'itnesses: nal ball Iand neck K, substantially as herein J AMES T. GRAHAM,

shown and described, whereby the tliills will 0. SEDGWiCK.

